Portable speaker



FIG. 1 is a front perspective view of a portable speaker, showing my new design with a battery compartment door in a closed configuration;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a right-side elevational view of FIG. 1;

FIG. 5 is a left-side elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1;

FIG. 7 is a bottom plan view of FIG. 1;

FIG. 8 is a bottom perspective view thereof, illustrated with the battery compartment door in an open configuration, and an audio cable in a stowed position; and,

FIG. 9 is a bottom perspective view of FIG. 1.

The broken lines illustrate the unclaimed portions and form no part of the claimed design. 

CLAIM I claim the ornamental design for a portable speaker, as shown and described. 